SAPPHIRE HD 7970 6GB Vapor-X Edition issue

[n0vice]

Abovesaid card goes from 48 degrees to 90 in 2 minutes while running hashcat on win 7 x64 using latest catalyst beta, while battlefield 3 can't burn it higher than 68 degrees.

I have a nice case with proper airflow, sensors on cpu and hdds don't go above 34, where to digg?

[mastercracker]

It depends. What case do you have? What is considered "proper" airflow? There is a lot of little things that can be done that might help or not:

-Remove dust from card and it's fans
-Replace thermal coumpound
-Add delta fans
-Reduce memory clock of the card

[n0vice]

The card is brand new without any traces of dust
I have Cooler Master HAF XB (RC-902XB-KKN1) with all possible fans installed/

[Si2006]

you'll need to leave the the side panels off to let that hot air escape quicker, like a kind of hybrid open air system, it may not be pretty and leave you system albeit, more vulnerable to accidents!

A low ambient will help so keep it away from a corner, off the floor and away from anything that generates heat, like a radiator

you gfx card is not designed for hash cracking purposes so you'll have accommodate for this, especially for dual gpu.

buy a much larger case with fans that move a lot of air or watercool it if you want to take a risk! thought its not recommended.

my 0.02$

[KT819GM]

Or simply set fan speed manually, for AMD is normal to hold @90C, so auto fans will be as silent as possible till that temperature. ~60-70% of fan speed should be able to hold your card at 60-70C.

[n0vice]

Thanks for advice.

Locked the coolers at 60% and the core clock at 900 MHZ, that gave me the stable output of 115KH/sec on wpa cracking with heat sensor dancing around 80 degrees.

Unfortunatelly even constant cooler lock at 100% with core set to 1100 MHZ runs the card to 90 degrees in 90 seconds causing hashcat to stop.

[radix]

sounds like ambient temp is too high or the airflow to the card is obstructed.

[epixoip]

buy a reference card next time